knives and scissors. It's suitable for both left- and right-handed users. It is well made and simple to use. It has nice little non-slip pads.
The slot nearer to the handle is perfect for very coarse sharpening. Wusthof 2-Stage Knife Sharpener is two sharp carbide blades. It really takes the metal off. Right after minutes with an old dull knife there are little chips available top. (In machinist jargon, a "chips" are little bits of curly metal that have been removed by way of a cutting tool.) This is really ideal for old dull knives that haven't been sharpened in a long time. However i wouldn't use it on a $100 Henckels or Wusthof knife. This could ruin it real fast.
The outer slot of Wusthof 2-Stage Knife Sharpener has two small ceramic rods, about the diameter of matchsticks. These are set at a steeper angle then a carbide blades inside the other slot. It absolutely was completely new and out of the box, and did wonders. But after a while those little ceramic rods got thoroughly coated with metal. Note: I was doing this on really cheap knives at a friend's house. Presumably these cheap knives were made from quite soft metal. Perhaps the rods would not have gotten quite so coated had I been sharpening high-quality knives.
My principal interest, and why I only gave Wusthof 2-Stage Knife Sharpener 4 stars, is really because I'm concerned that whenever a while it'll sharpen more slowly due to all the metal coating the rods. Where there is apparently absolutely no way to eliminate and clean the rods.